If successful, she will begin degrees in environmental and political science.
Councillor Gary Caffell said the council was to found a youth task group and he asked for advice from Ms Trilford about engaging teens in council matters.
Ms Trilford said the establishment of a youth council "is a great place to start".
"Minus the jargon and the acronyms, make it simple. We just want to know what's going on - something we can question or challenge, embrace or endorse."
Councillor Pip Hannon raised the point with Ms Trilford about surveys that only canvassed landline telephone users. She said that stripped young cellphone owners from the equation and that "there's an important voice missing".